Details
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Bug
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Status: Resolved
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Major
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Resolution: Fixed
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2.2.0, 2.2.1
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None
Description
The exception occurs in MetricsReporter when it tries to register gauges using lastProgress of each stream.
registerGauge("inputRate-total", () => stream.lastProgress.inputRowsPerSecond) registerGauge("processingRate-total", () => stream.lastProgress.inputRowsPerSecond) registerGauge("latency", () => stream.lastProgress.durationMs.get("triggerExecution").longValue())
In case if a stream doesn't have any progress reported than following exception occurs:
18/01/05 17:45:57 ERROR ScheduledReporter: RuntimeException thrown from CloudwatchReporter#report. Exception was suppressed. java.lang.NullPointerException at org.apache.spark.sql.execution.streaming.MetricsReporter$$anonfun$1.apply$mcD$sp(MetricsReporter.scala:42) at org.apache.spark.sql.execution.streaming.MetricsReporter$$anonfun$1.apply(MetricsReporter.scala:42) at org.apache.spark.sql.execution.streaming.MetricsReporter$$anonfun$1.apply(MetricsReporter.scala:42) at org.apache.spark.sql.execution.streaming.MetricsReporter$$anon$1.getValue(MetricsReporter.scala:49) at amazon.nexus.spark.metrics.cloudwatch.CloudwatchReporter.lambda$createNumericGaugeMetricDatumStream$0(CloudwatchReporter.java:146) at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174) at java.util.Collections$UnmodifiableMap$UnmodifiableEntrySet.lambda$entryConsumer$0(Collections.java:1575) at java.util.TreeMap$EntrySpliterator.forEachRemaining(TreeMap.java:2969) at java.util.Collections$UnmodifiableMap$UnmodifiableEntrySet$UnmodifiableEntrySetSpliterator.forEachRemaining(Collections.java:1600) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:312) at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:742) at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:742) at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:742) at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:742) at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:742) at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:742) at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:510) at amazon.nexus.spark.metrics.cloudwatch.CloudwatchReporter.partitionIntoSublists(CloudwatchReporter.java:390) at amazon.nexus.spark.metrics.cloudwatch.CloudwatchReporter.report(CloudwatchReporter.java:137) at com.codahale.metrics.ScheduledReporter.report(ScheduledReporter.java:162) at com.codahale.metrics.ScheduledReporter$1.run(ScheduledReporter.java:117) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)
